Narrow-gage locomotive



(NoModeL) W. P. HENSZBY.

Narrow Gage Locomotive.

Patented Nov. 9, 1880.

2 Sheets-Sheet 1.

Wr/vzsssa N. PETERS. FHOTO-LITHOGRAPHER. WAsHINGTON. D C.

(1m Model.)

2 Sheets-Sheet 2. W. P. HENSZEY. Narrow Gage Locomotive. No. 234,279. Patented Nov. 9,1880.

FIG.3.

VII/l/l/lll NJETERS, FNDTO-UTHOGIAPMER, WASHINGTON, D C.

UNITED STATES PATENT OFFICE.

WILLIAM P. HEN SZEY, OF PHILADELPHIA, PENNSYLVANIA.

NARROW-GAGE LOCOMOTIVE.

SPECIFICATION forming part of Letters Patent No. 234,279, dated November 9, 1880. Application filed October 4, 1880. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM P. HENSZEY, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented an Improvement in Narrow-Gage Locomotives, of which the following is a specification.

My invention relates to an improvement in the construction of narrow-gage locomotives, and the object of my improvementis to obtain increased capacity of the fire-box and increased grate area.

In the accompanying drawings, Figure 1, Sheet 1, is a side view of part of a narrowgage locomotive made according to my invention; Fig. 2, a transverse section on the line 1 2; and Figs. 3 and 4, Sheet 2, similar views illustrating a modification of my invention.

It may be stated, in the first place, that in constructing a narrow-gage locomotive it has been the common practice to make the fire-box narrow enough to pass between the frames of the engine, a plan which involved the necessity of making the grade of a limited area, too limited for the size of the engine-a difficulty overcome in the manner which I will now proceed to describe.

In Figs. 1 and 2, A represents the firebox, and B part of the barrel or body, of a narrowgage locomotive, D D being the opposite side frames, E E the two driving-axles, F F the two pairs of coupled driving-wheels, and G G the axle-boxes, adapted to guides in the frames in the usual manner.

The diameters of the driving-wheels and the essential vertical play of the axle-boxes will determine the height of the frame above the said boxes, the lines m m in Fig. 1 indicating this height from the track a; but the frames between the portions devoted to the axle-boxes are depressed, the bottom of the fire-box being a short distance above the upper edges of these depressed portions of the frames. By this arrangement a reasonable depth of fire-box is obtained, and at the same time an opportunity is afforded to make it much wider than one constructed to pass between the frames. and to increase the grate area.

I am aware that the fire-box of a locomotivehas been made much wider than the distance across the frames, and hence that this cannot be claimed, broadly; but this feature has not, to my knowledge, been combined with frames depressed between those portions of the same which are devoted to the axle-boxes of two driving-axlesa combination which is of special importance in the construction of narrowgage locomotives.

In Fig. 1 the peripheries of the two wheels are clear of the fire-box, and hence the latter can be made of any width desired; but in the modification illustrated in Sheet 2 the firebox is so much longer than in Fig. 1 that its breadth, owing to the wheels, can be no greater than the distance across the frames; but this limited increase of width is of importance in the construction of that class of locomotives to which my invention relates.

I claim as my invention- The combination, in narrow gage locomotives, of frames depressed between those portions of the same which are devoted to the boxes of the two driving-axles, with a boiler having a fire-box situated between the said axles and above the depressed portion of the frame, and having a width as great as or greater than the distance across the frames, all substantially as set forth.

In testimony whereofl have signed my name to this specification in the presence of two subscribing witnesses.

WM. P. HENSZEY.

WVitnesses JAMES F. TOBIN, HARRY SMITH. 

